3751745891 has 16 divisors (see below), whose sum is σ = 3942009600. Its totient is φ = 3565987200.

The previous prime is 3751745887. The next prime is 3751745897. The reversal of 3751745891 is 1985471573.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3751745891 - 2² = 3751745887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3751745897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2096225 + ... + 2098013.

It is an arithmetic number, because the mean of its divisors is an integer number (246375600).

Almost surely, 2^3751745891 is an apocalyptic number.

3751745891 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3751745891 is a deficient number, since it is larger than the sum of its proper divisors (190263709).

3751745891 is a wasteful number, since it uses less digits than its factorization.

3751745891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990.

The product of its digits is 1058400, while the sum is 50.

The square root of 3751745891 is about 61251.4970510926. The cubic root of 3751745891 is about 1553.8573217589.

The spelling of 3751745891 in words is "three billion, seven hundred fifty-one million, seven hundred forty-five thousand, eight hundred ninety-one".